This is also described at http://www.snom.com/wiki/index.php/Mass_deployment

Snom (100/105/190/200/220/300/320/360/...) Phone Provisioning Primer:

By default and whenever they are Reset, all Snom phones "browse" back to snom to get their settings.
(Unless DHCP Option 66 is set).

Check out the following links which my phone browses when ever I reset it to factory defaults:

Phones browse first to this page to set up a redirect:
http://www.snomag.de/snom190/snom190.htm

Then this page to do the redirect from Snom:
http://provisioning.snom.com/snom190/snom190.php?mac=000413221266

Also see a phone that has not been redirected:
# Is it blank so as not to mess with any existing parameters.
http://provisioning.snom.com/snom190/snom190.php?mac=000413220BF8

Each phone replaces {mac} with it's unique MAC address.

The snomag.de server is set up to redirect that phone to ABP's redirector web server/page.

So the phone browses to:
http://provis.abptech.com/snom/redir.php?mac=000413221266

ABPs redirector page tells the phone to go to ABP's (or your) provisioning web server:
http://provis.abptech.com/snom/cus/cust.php?mac=000413221266

The phones also browse this "cust.php" page on bootup as well.

And finally, once every "firmware_interval", it checks back at:
http://provis.abptech.com/snom/firmware.php?type=s190a&mac=000413221266
to see if it needs to download new firmware.

These php/mysql scripts are available if you ask real nice:)

***********************************************************************
Note 1:  The phones also obey Option 66 from their DHCP server.

***********************************************************************
Note 2:  If you'd like ABP to redirect your phones to your provisioning web page, open a "Provisioning
Redirect Request" at:
http://www.abptech.com/mainpages/support/supportcase.php

List your MAC and the URL you want the phone redirected to.

***********************************************************************
Note 3:  If you are tempted to copy the settings page from your phones settings.htm page, make sure
 to comment out the following parameters:
#phone_type!: 
#mac&: 000413230017
#setting_server!: 
#ip_adr!: 192.168.188.115
#netmask!: 255.255.0.0
#update_server!: 
#dns_domain!: intern.snom.de
#dns_server1!: 192.168.0.9
#dns_server2!: 
#dhcp!: off
#gateway!: 192.168.0.1
#phone_name!: 
#lcserver1!
#contrast
#firmware!: 
#bootloader!: 
#update_filename!: 
#update_host_b!: 
#update_host_f!: 
#reset_settings



Written  2004/11/23
Modified 2006/05/17
by: Shanon Swafford